Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 3622
interventional 3171
Observational 425
Registry 26

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Drug 1672
Biological 274
Drug|Other 183
Biological|Drug 173
Drug|Procedure 100
Biological|Drug|Other 79
Biological|Drug|Procedure|Radiation 66
Biological|Drug|Procedure 61
Other 59
Drug|Procedure|Radiation 58
Drug|placebo 48
Procedure 45
Drug|Radiation 33
Biological|Drug|Other|Procedure|Radiation 27
Behavioral 26
Drug|Other|Procedure|Radiation 26
Biological|Drug|Radiation 22
Biological|Other 20
Drug|Other|Procedure 17
Biological|Drug|Other|Procedure 13
Device 11
Biological|Procedure 10
Combination Product 9
Dietary Supplement 9
Drug|Genetic|Other 9
Device|Drug|Procedure 7
Other|Procedure 7
Drug|Genetic 6
Drug|Other|Radiation 6
Behavioral|Other 5
Biological|Drug|Genetic|Other|Procedure 5
Biological|Device|Drug 4
Dietary Supplement|Drug 4
Dietary Supplement|placebo 4
Drug|Genetic|Other|Procedure 4
Genetic 4
Radiation 4
Biological|Other|Procedure 3
Biological|Procedure|Radiation 3
Device|Drug 3
Biological|Combination Product 2
Biological|Drug|Other|Radiation 2
Biological|Drug|placebo 2
Biological|Genetic|Other 2
Biological|Other|placebo 2
Device|Drug|Other 2
Device|Other 2
Diagnostic Test|Drug|Genetic|Procedure|Radiation 2
Dietary Supplement|Other 2
Drug|placebo|Procedure 2
Genetic|Other 2
Genetic|Procedure 2
Behavioral|Dietary Supplement|Other 1
Behavioral|Dietary Supplement|Other|Procedure 1
Behavioral|Drug 1
Behavioral|Drug|Other|Procedure 1
Behavioral|Other|Procedure 1
Biological|Combination Product|Drug 1
Biological|Device 1
Biological|Device|Drug|Other 1
Biological|Device|Drug|Other|Procedure 1
Biological|Device|Drug|Procedure|Radiation 1
Biological|Device|Drug|Radiation 1
Biological|Dietary Supplement|Drug|placebo 1
Biological|Dietary Supplement|Drug|Procedure 1
Biological|Drug|Genetic|Other 1
Biological|Drug|placebo|Procedure 1
Biological|Genetic|Other|Procedure 1
Biological|placebo 1
Combination Product|Dietary Supplement 1
Device|Drug|Other|Procedure|Radiation 1
Device|Drug|Procedure|Radiation 1
Device|Other|Procedure 1
Diagnostic Test|Drug 1
Dietary Supplement|Drug|Other 1
Drug|Genetic|Other|Procedure|Radiation 1
Drug|Genetic|Procedure|Radiation 1
Drug|Other|placebo|Procedure 1
Other|placebo|Procedure 1
Procedure|Radiation 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 1833
China 147
France 89
Germany 83
United States|Canada 64
NA 60
Italy 58
Japan 50
Spain 45
United Kingdom 39
Canada 31
Korea, Republic of 25
United States|Australia|Canada 22
Austria|Germany 13
Israel 11
Denmark 10
Switzerland 10
United States|France 9
United States|Germany 9
Austria 8
Russian Federation 8
United States|Germany|Italy 8
Brazil 7
Mexico 7
Sweden 7
United States|Australia 7
United States|Italy 7
Australia 6
United States|Canada|Puerto Rico 6
United States|Israel 6
Belgium 5
Egypt 5
Hong Kong 5
Netherlands 5
United States|Australia|Canada|Netherlands|New Zealand|Puerto Rico|Switzerland 5
United States|Australia|Canada|Netherlands|Puerto Rico|Switzerland 5
United States|United Kingdom 5
Norway 4
Singapore 4
Turkey 4
United States|Australia|Canada|New Zealand|Puerto Rico 4
United States|Australia|Canada|New Zealand|Switzerland 4
United States|Australia|Canada|Puerto Rico 4
Denmark|Finland|Iceland|Norway|Sweden 3
Germany|Netherlands 3
Germany|Switzerland 3
Iran, Islamic Republic of 3
Malaysia 3
United States|Australia|Canada|New Zealand 3
United States|Australia|Canada|New Zealand|Puerto Rico|Saudi Arabia 3
United States|Canada|Puerto Rico|Switzerland 3
United States|France|Germany 3
United States|Korea, Republic of 3
United States|Puerto Rico|South Africa 3
Austria|France|Germany 2
Austria|France|Germany|Italy|Netherlands|United Kingdom 2
Canada|France 2
Finland|Norway|Sweden 2
France|Germany 2
France|United Kingdom 2
Germany|Austria 2
India 2
Japan|Korea, Republic of|Taiwan 2
Lebanon 2
Lithuania 2
Poland 2
United States|Australia|Austria|Belgium|France|Germany|Hungary|Italy|New Zealand|Spain|United Kingdom 2
United States|Australia|Belgium|Canada|China|Czechia|Ireland|Israel|Italy|New Zealand|Poland|Russian Federation|Spain|Turkey|Ukraine|United Kingdom 2
United States|Australia|Canada|Ireland|New Zealand|Puerto Rico|Switzerland 2
United States|Australia|Canada|Switzerland 2
United States|Australia|France|Poland 2
United States|Belgium 2
United States|Canada|France|Germany|Hungary|India|Italy|Poland|Singapore|United Kingdom 2
United States|Canada|France|Germany|Italy|Spain 2
United States|Canada|France|Netherlands 2
United States|Canada|Netherlands|Puerto Rico|Switzerland 2
United States|Denmark|Germany 2
United States|France|Germany|Italy|United Kingdom 2
United States|Georgia 2
United States|Germany|Italy|Spain 2
United States|Germany|Netherlands 2
United States|Germany|Spain 2
United States|Poland 2
United States|Puerto Rico 2
United States|Spain 2
United States|Switzerland 2
Algeria|Argentina|Australia|Brazil|Canada|Egypt|India|Israel|Lebanon|Malaysia|Mexico|Oman|Russian Federation|Saudi Arabia|South Africa|Taiwan|Thailand|Tunisia|United Arab Emirates 1
Argentina|Australia|Austria|Belarus|Belgium|Canada|Chile|Croatia|Czechia|Denmark|Finland|France|Germany|Greece|Hungary|Israel|Italy|Malaysia|Mexico|Netherlands|New Zealand|Norway|Poland|Romania|Saudi Arabia|Slovakia|Slovenia|Spain|Sweden|Switzerland|Turkey 1
Argentina|Australia|Brazil|Canada|Chile|Croatia|Czechia|France|Germany|Greece|Italy|Mexico|New Zealand|Poland|Portugal|Russian Federation|Slovakia|Spain|Turkey 1
Argentina|Australia|Brazil|Canada|France|Spain 1
Argentina|Australia|Bulgaria|Hong Kong|Hungary|Mexico|New Zealand|Poland|Russian Federation|Taiwan 1
Argentina|Austria|Belgium|Chile|Czech Republic|Germany|Hungary|Italy 1
Argentina|Belgium|Bosnia and Herzegovina|Brazil|Canada|Egypt|Estonia|Finland|France|Germany|Greece|Ireland|Israel|Italy|Korea, Republic of|Latvia|Lithuania|Mexico|North Macedonia|Poland|Portugal|Romania|Russian Federation|Serbia|Slovakia|Slovenia|Spain|Sweden|Switzerland|Thailand|Turkey 1
Argentina|Brazil|China|Colombia|Germany|Guatemala|India|Mexico|Panama|Poland|Russian Federation|Venezuela 1
Argentina|Canada|Denmark|Finland|France|Italy|Netherlands|Norway|Sweden 1
Argentina|Croatia|Greece|Ireland|Italy|New Zealand|Russian Federation|United Kingdom 1
Argentina|Venezuela 1
Armenia|Belarus|Kyrgyzstan|Russian Federation|Uzbekistan 1
Australia|Austria|Belgium|Czech Republic|Denmark|France|Germany|Israel|Italy|New Zealand|Spain 1
Australia|Austria|Czechia|Germany|Israel|Italy|Slovakia|Switzerland 1
Australia|Austria|Czechia|Germany|Israel|Italy|Switzerland 1
Australia|Belgium|France|Germany|Italy|Korea, Republic of|Netherlands|Singapore|Spain|Sweden|United Kingdom 1
Australia|Brazil|France|Israel|Italy|Russian Federation|Spain|Switzerland|Turkey 1
Australia|Canada|Estonia|Finland|Germany|Greece|New Zealand|Norway|Sweden 1
Australia|Canada|France|Korea, Republic of|Netherlands 1
Australia|China|Malaysia|Taiwan 1
Australia|China|New Zealand|Taiwan 1
Australia|France 1
Australia|France|Germany|Hungary|Korea, Republic of|Poland|Singapore|United Kingdom 1
Australia|France|Spain|United Kingdom 1
Australia|United Kingdom 1
Austria|Belgium|Bulgaria|Czechia|France|Germany|Hungary|Ireland|Israel|Italy|Poland|Russian Federation|Singapore|Slovakia|Sweden|Ukraine|United Kingdom 1
Austria|Belgium|Canada|France|Germany|Italy|Japan|Norway|Spain 1
Austria|Belgium|Canada|France|Germany|Italy|Norway 1
Austria|Belgium|Croatia|France|Germany|Italy|Netherlands 1
Austria|Belgium|Croatia|France|Italy|Netherlands 1
Austria|Belgium|France|Germany|Italy|Netherlands|Poland|Romania|Russian Federation|Spain|United Kingdom 1
Austria|Belgium|France|Germany|Italy|Netherlands|Portugal 1
Austria|Belgium|France|Italy 1
Austria|Canada|Finland|Norway|Russian Federation|Sweden 1
Austria|Czechia|Germany|Italy|Poland|United Kingdom 1
Austria|Czechia|Slovakia 1
Austria|Finland|Germany|Russian Federation 1
Austria|Germany|Italy 1
Austria|Germany|Switzerland 1
Austria|United States|Australia|Belgium|Brazil|Canada|China|Czechia|Denmark|France|Germany|Italy|Korea, Republic of|Russian Federation|Spain|Taiwan|Turkey|United Kingdom 1
Austria|United States|Canada|France|Germany|Italy|Netherlands 1
Bangladesh 1
Belarus 1
Belarus|Poland 1
Belarus|Russian Federation|Uzbekistan 1
Belgium|Bulgaria|Croatia|France|Germany|Italy|Lithuania|Netherlands|Portugal 1
Belgium|Canada|China|France|Hungary|Italy|Netherlands|Poland|Spain|United Kingdom 1
Belgium|Canada|Croatia|Germany|Portugal|United Kingdom 1
Belgium|Canada|Germany|United Kingdom 1
Belgium|Croatia|Czech Republic|France|Germany|Italy|Netherlands|Portugal|Slovakia|Turkey 1
Belgium|Czechia|France|Germany|Italy 1
Belgium|Czechia|France|Germany|Netherlands|Slovakia 1
Belgium|Denmark|Estonia|Finland|Hong Kong|Iceland|Netherlands|Norway|Sweden 1
Belgium|Denmark|France|Germany|Italy|Netherlands|Spain|Sweden|United Kingdom 1
Belgium|Denmark|Netherlands 1
Belgium|France 1
Belgium|France|Germany 1
Belgium|France|Germany|Italy 1
Belgium|France|Germany|Italy|Spain 1
Belgium|France|Spain 1
Belgium|Germany 1
Belgium|Germany|Italy|Netherlands|Turkey 1
Belgium|Germany|Netherlands|Switzerland 1
Belgium|Germany|United Kingdom 1
Belgium|Switzerland 1
Bulgaria|Austria|Brazil|United States|Argentina|Australia|Canada|Croatia|Czechia|Denmark|Egypt|Estonia|France|Germany|Hong Kong|Italy|Mexico|Netherlands|New Zealand|Romania|Russian Federation|Slovakia|Spain|Switzerland|Thailand|United Kingdom 1
Bulgaria|Canada|India|Russian Federation|Slovakia|South Africa|Spain 1
Bulgaria|Croatia|Czechia|Estonia|Finland|France|Greece|Hungary|Italy|Lithuania|Norway|Romania|Serbia|Slovakia|Spain|Sweden 1
Bulgaria|Georgia|Poland 1
Canada|France|Germany|Italy|Spain 1
Canada|Germany 1
Canada|Russian Federation|Spain 1
China|Malaysia|Russian Federation|Singapore|Thailand 1
China|Philippines|Taiwan|Thailand|Vietnam 1
Colombia|Venezuela 1
Czech Republic 1
Czech Republic|United States|Australia|Brazil|France|Israel|Italy|Poland|Puerto Rico|Russian Federation|Ukraine|United Kingdom 1
Czechia|Austria|Belgium|Denmark|France|Germany|Ireland|Italy|Netherlands|Spain|Sweden|Switzerland|United Kingdom 1
Czechia|Denmark|Finland|France|Germany|Greece|Netherlands|Norway|Portugal|Sweden 1
Czechia|France|Israel|Japan|Spain 1
Czechia|Germany|Switzerland 1
Denmark|Estonia|Finland|Lithuania|Norway|Sweden 1
Denmark|Finland|Norway|Sweden 1
Denmark|Germany|Netherlands 1
Denmark|Norway|Sweden 1
Denmark|Sweden 1
Denmark|United Kingdom 1
Finland 1
Finland|Germany|Netherlands|Norway|Sweden 1
France|Belgium|Portugal 1
France|Germany|Italy 1
France|Germany|Italy|Netherlands|Spain 1
France|Germany|Italy|United Kingdom 1
France|Germany|Spain 1
France|Switzerland 1
France|United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Czechia|Germany|Israel|Italy|Japan|Norway|Poland|Portugal|Spain|Switzerland|Taiwan|Turkey 1
France|United States|Argentina|Austria|Belgium|Brazil|Canada|Colombia|Czechia|Denmark|Egypt|Finland|Germany|Hong Kong|Hungary|Italy|Japan|Korea, Republic of|Malaysia|Mexico|Netherlands|Norway|Poland|Portugal|Russian Federation|Singapore|Slovakia|South Africa|Spain|Sweden|Switzerland|Taiwan|Thailand|Turkey|United Kingdom|Venezuela 1
France|United States|Australia|Austria|Belgium|Canada|Denmark|Finland|Germany|Hong Kong|Italy|Korea, Republic of|Netherlands|New Zealand|Norway|Poland|Singapore|Spain|Sweden|Switzerland|Taiwan|United Kingdom 1
France|United States|Australia|Italy|Spain 1
France|United States|Belgium|Canada|Germany|Greece|Netherlands|Poland|Serbia|United Kingdom 1
France|United States|Germany|Italy 1
Germany|Austria|Belgium|Denmark|Finland|Ireland|Israel|Netherlands|Sweden|Switzerland 1
Germany|Netherlands|United Kingdom 1
Germany|United States|Argentina|Australia|Austria|Brazil|Bulgaria|Canada|Croatia|Czechia|Denmark|Egypt|Estonia|France|Hong Kong|Italy|Mexico|Netherlands|New Zealand|Romania|Russian Federation|Slovakia|Spain|Switzerland|Thailand|United Kingdom 1
Germany|United States|France|Italy|United Kingdom 1
Greece 1
Hong Kong|Japan|Korea, Republic of|Russian Federation|Taiwan|Thailand|Vietnam 1
Hong Kong|Japan|Malaysia|Singapore|Taiwan 1
India|Korea, Republic of|Thailand 1
Indonesia 1
Indonesia|Korea, Republic of|Philippines|Thailand 1
Ireland 1
Ireland|Italy|United Kingdom 1
Ireland|United States|Germany|Israel 1
Israel|United States 1
Italy|Saudi Arabia|United Kingdom 1
Italy|United Kingdom 1
Japan|Korea, Republic of 1
Jordan|Lebanon|Saudi Arabia|Tunisia 1
Korea, Republic of|Turkey|Ukraine 1
Mexico|United States|Argentina|Belgium|Brazil|Canada|Czechia|Germany|Greece|Hong Kong|Hungary|Ireland|Israel|Italy|Korea, Republic of|Netherlands|Poland|Puerto Rico|Russian Federation|Spain|Taiwan|Thailand 1
Netherlands|United Kingdom 1
Netherlands|United States|Belgium|Canada|Czechia|Denmark|France|Israel|Poland|Russian Federation|Spain|Sweden|Turkey|United Kingdom 1
Poland|Spain|Uruguay 1
Poland|United Kingdom 1
Portugal|Spain 1
Saudi Arabia 1
South Africa|United States|Canada|Puerto Rico 1
Spain|Finland|France|Portugal|Sweden|Tunisia|Turkey|United Kingdom 1
Spain|Sweden|United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Czech Republic|Denmark|Finland|France|Germany|Greece|Hungary|Ireland|Israel|Italy|Korea, Republic of|Netherlands|Norway|Peru|Philippines|Poland|Russian Federation|Singapore|South Africa|Switzerland|Taiwan|Thailand|United Kingdom 1
Spain|United States|Australia|Austria|Belgium|Canada|Colombia|Czechia|Denmark|France|Germany|Hungary|Ireland|Israel|Italy|Mexico|Netherlands|New Zealand|Poland|Portugal|Romania|Russian Federation|South Africa|Sweden|United Kingdom 1
Spain|United States|Australia|Canada|Croatia|Czechia|France|Hungary|Mexico|Poland|Romania|Russian Federation|Serbia|Taiwan|United Kingdom 1
Switzerland|Australia|United States|Argentina|Austria|Brazil|Bulgaria|Canada|Croatia|Czechia|Denmark|Egypt|Estonia|France|Germany|Hong Kong|Italy|Mexico|Netherlands|New Zealand|Romania|Russian Federation|Slovakia|Spain|Thailand|United Kingdom 1
Taiwan 1
Thailand 1
United States|Argentina|Australia|Austria|Belarus|Brazil|Bulgaria|Canada|Finland|France|Greece|Italy|Korea, Republic of|Poland|Russian Federation|Spain|Taiwan|Turkey 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|China|Denmark|Estonia|Finland|France|Germany|Hungary|Ireland|Israel|Italy|Korea, Republic of|Norway|Peru|Philippines|Poland|Puerto Rico|Russian Federation|Singapore|South Africa|Spain|Sweden|Switzerland|Taiwan|Thailand|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Czech Republic|Denmark|Finland|France|Germany|Hungary|Ireland|Israel|Italy|Korea, Republic of|Mexico|Netherlands|Norway|Peru|Philippines|Poland|Russian Federation|Singapore|South Africa|Spain|Sweden|Switzerland|Taiwan|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Denmark|Finland|France|Germany|Israel|Italy|Korea, Republic of|Netherlands|Norway|Peru|Sweden|Switzerland|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Chile|China|Colombia|Czech Republic|Denmark|France|Germany|Greece|Hungary|India|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Peru|Poland|Russian Federation|Singapore|Spain|Turkey 1
United States|Argentina|Australia|Austria|Brazil|Bulgaria|Canada|Croatia|Denmark|Estonia|France|Germany|Italy|Mexico|New Zealand|Poland|Romania|Russian Federation|Spain|Switzerland|United Kingdom 1
United States|Argentina|Australia|Austria|Brazil|Bulgaria|Canada|Czechia|Denmark|France|Germany|Hungary|Israel|Italy|Korea, Republic of|Netherlands|Poland|Russian Federation|Saudi Arabia|Slovakia|South Africa|Spain|Sweden|Taiwan|Turkey|United Kingdom 1
United States|Argentina|Australia|Austria|Brazil|Canada|Chile|China|Colombia|Finland|Germany|Hong Kong|Hungary|India|Italy|Korea, Republic of|Mexico|Netherlands|Norway|Peru|Russian Federation|Singapore|South Africa|Spain|Sweden|Taiwan|United Kingdom 1
United States|Argentina|Australia|Austria|Brazil|Czechia|France|Germany|Hungary|Italy|Korea, Republic of|Poland|Romania|Spain|Taiwan|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Bulgaria|Canada|China|Croatia|Czechia|France|Germany|Hong Kong|Hungary|Israel|Italy|Taiwan|Japan|Korea, Republic of|Poland|Portugal|Romania|Russian Federation|Serbia|Singapore|Spain|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|China|Colombia|Finland|France|Hong Kong|Hungary|India|Italy|Japan|Korea, Republic of|Latvia|Netherlands|Peru|Poland|Russian Federation|Singapore|South Africa|Spain|Thailand|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|China|Czechia|France|Germany|Greece|Hungary|Ireland|Japan|Korea, Republic of|Mexico|New Zealand|Norway|Puerto Rico|Russian Federation|South Africa|Spain|Taiwan|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Denmark|Finland|France|Germany|Israel|Italy|Korea, Republic of|Netherlands|Norway|Peru|Philippines|Singapore|Sweden|Switzerland|Taiwan|Thailand|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Finland|France|Germany|Hungary|Ireland|Israel|Italy|Korea, Republic of|Norway|Peru|Poland|Russian Federation|South Africa|Spain|Sweden|Switzerland|Thailand|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|France|Germany|Greece|Israel|Japan|Korea, Republic of|Mexico|Poland|Russian Federation|Singapore|Spain|Tunisia|United Kingdom 1
United States|Argentina|Australia|Brazil|Bulgaria|Canada|Czechia|France|Germany|Hungary|Israel|Italy|Japan|Korea, Republic of|Lebanon|Mexico|Netherlands|Romania|Russian Federation|Saudi Arabia|Serbia|Spain|Switzerland|Turkey|United Kingdom 1
United States|Argentina|Australia|Brazil|Canada 1
United States|Argentina|Australia|Brazil|Canada|France|Germany|India|Italy|Korea, Republic of|Mexico|Netherlands|Romania|Russian Federation|Singapore|South Africa|Spain|United Kingdom 1
United States|Argentina|Australia|Canada|Chile|Czechia|Denmark|France|Germany|Hong Kong|Italy|Korea, Republic of|Poland|Portugal|Russian Federation|Singapore|Spain|Sweden|Switzerland|Taiwan|United Kingdom 1
United States|Argentina|Australia|Canada|China|Czechia|Finland|France|Germany|Hungary|Italy|Japan|Korea, Republic of|Netherlands|Poland|Singapore|Spain|Sweden|Taiwan|United Kingdom 1
United States|Argentina|Austria|Belgium|Brazil|Canada|China|Czechia|France|Hungary|Italy|Korea, Republic of|Poland|Spain|Thailand 1
United States|Argentina|Austria|Belgium|Brazil|Canada|Czechia|Finland|France|Germany|Greece|Hungary|India|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Norway|Poland|Portugal|Russian Federation|South Africa|Spain|Taiwan 1
United States|Argentina|Austria|Belgium|Bulgaria|Colombia|Denmark|France|Germany|Greece|Hungary|Ireland|Italy|Japan|Netherlands|Poland|Spain|Sweden|United Kingdom 1
United States|Argentina|Belgium|Brazil|Canada|Chile|China|Colombia|France|Germany|Hong Kong|Hungary|India|Italy|Japan|Korea, Republic of|Latvia|Lithuania|Mexico|Poland|Russian Federation|Singapore|South Africa|Spain|Taiwan|Thailand|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Belgium|Brazil|Canada|Colombia|Czechia|France|Germany|Greece|Israel|Korea, Republic of|Mexico|Poland|Portugal|Russian Federation|Spain|Sweden|Turkey|Ukraine|United Kingdom 1
United States|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|Chile|Colombia|Croatia|Czechia|Denmark|France|Hungary|Israel|Italy|Netherlands|New Zealand|Poland|Portugal|Romania|Russian Federation|Serbia|Slovakia|South Africa|Spain|United Kingdom 1
United States|Australia|Austria|Belgium|Brazil|Canada|China|Croatia|Czechia|Denmark|Finland|France|Germany|Hungary|Israel|Italy|Japan|Korea, Republic of|Norway|Poland|Portugal|Puerto Rico|Russian Federation|South Africa|Spain|Sweden|Taiwan|Turkey|Ukraine 1
United States|Australia|Austria|Belgium|Brazil|Canada|Czechia|Finland|France|Germany|Ireland|Israel|Italy|Korea, Republic of|Lithuania|Mexico|Poland|Portugal|Russian Federation|Spain|Taiwan|Turkey|United Kingdom 1
United States|Australia|Austria|Belgium|Bulgaria|Canada|Croatia|Czechia|France|Germany|Hong Kong|Hungary|Israel|Italy|Korea, Republic of|New Zealand|Poland|Russian Federation|Singapore|Slovakia|Spain|Sweden|Taiwan|Ukraine|United Kingdom 1
United States|Australia|Austria|Belgium|Bulgaria|Canada|Czechia|Denmark|Finland|France|Germany|Hungary|Italy|Japan|Korea, Republic of|Netherlands|Poland|Romania|Russian Federation|Serbia|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|China|Czechia|France|Germany|Israel|Italy|Korea, Republic of|Netherlands|Poland|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|Denmark|France|Germany|Hungary|Italy|Korea, Republic of|Netherlands|New Zealand|Poland|Russian Federation|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|France|Germany|Hungary|Italy|Korea, Republic of|New Zealand|Poland|Spain|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|France|Israel|Italy|New Zealand|Poland|Russian Federation|Spain|Sweden|Turkey|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Denmark|Finland|France|Germany|Ireland|Israel|Italy|Korea, Republic of|Netherlands|Norway|Peru|Singapore|South Africa|Spain|Sweden|Switzerland|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Denmark|Finland|France|Germany|Israel|Italy|Korea, Republic of|Netherlands|Norway|Philippines|Singapore|Sweden|Switzerland|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Denmark|France|Germany|Italy|Netherlands|New Zealand|Norway|Spain|Sweden|Switzerland|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|France|Germany|Italy|Japan|Norway|Spain 1
United States|Australia|Austria|Belgium|Canada|France|Germany|Netherlands|Norway|Poland|Turkey|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Germany|Hungary|Netherlands|Norway|Spain|United Kingdom 1
United States|Australia|Austria|Belgium|Czechia|France|Italy|New Zealand|Poland|Russian Federation|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|France|Germany|Korea, Republic of|Poland|Spain 1
United States|Australia|Austria|Belgium|France|Ireland|Italy|Poland|Spain|United Kingdom 1
United States|Australia|Austria|Brazil|Canada|China|Czechia|France|Germany|Israel|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Poland|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Australia|Austria|Canada|Chile|Czechia|Denmark|France|Germany|Hong Kong|Italy|Japan|Korea, Republic of|Poland|Portugal|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Australia|Austria|Canada|Denmark|France|Israel|Italy|Netherlands|Spain|Switzerland|United Kingdom 1
United States|Australia|Austria|Finland|France|Germany|Italy|Netherlands|United Kingdom 1
United States|Australia|Belarus|Brazil|Canada|Israel|Korea, Republic of|Mexico|New Zealand|Poland|Russian Federation|Singapore 1
United States|Australia|Belgium|Brazil|Canada|China|Czechia|France|Germany|Greece|Israel|Italy|Japan|Korea, Republic of|Mexico|Poland|Russian Federation|Spain|Turkey|United Kingdom 1
United States|Australia|Belgium|Brazil|Canada|Czechia|Korea, Republic of|Mexico|New Zealand|Poland|Puerto Rico|Russian Federation 1
United States|Australia|Belgium|Canada|Croatia|Czechia|France|Germany|Hong Kong|Hungary|Italy|Korea, Republic of|Netherlands|Poland|Serbia|Singapore|Spain|Taiwan|United Kingdom 1
United States|Australia|Belgium|Canada|Croatia|Czechia|France|Greece|Hungary|Ireland|Italy|Poland|Portugal|Romania|Russian Federation|Spain|Turkey|United Kingdom 1
United States|Australia|Belgium|Canada|Denmark|France|Germany|Greece|Italy|Japan|Korea, Republic of|New Zealand|Poland|Spain|Taiwan|United Kingdom 1
United States|Australia|Belgium|Canada|Denmark|France|Hungary|Italy|Netherlands|New Zealand|Norway|Poland|Romania|Russian Federation|Spain|Sweden|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Ireland|Italy|Norway|Poland|Romania|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Italy|Japan|Korea, Republic of|Poland|Spain|Taiwan|United Kingdom 1
United States|Australia|Belgium|Canada|Germany|New Zealand|Sweden|Turkey|United Kingdom 1
United States|Australia|Belgium|Canada|Greece|Hungary|Israel|Korea, Republic of|Poland|Russian Federation 1
United States|Australia|Belgium|China|Czechia|France|Germany|Italy|Netherlands|New Zealand|Poland|Spain|Sweden|Turkey|United Kingdom 1
United States|Australia|Belgium|France|Germany|Israel|Korea, Republic of|Poland|Russian Federation|Spain|Sweden|Taiwan|Turkey|United Kingdom 1
United States|Australia|Belgium|France|Germany|Italy|Korea, Republic of|Peru|Spain|Switzerland|Turkey|United Kingdom 1
United States|Australia|Belgium|France|Germany|Italy|Netherlands|Puerto Rico|United Kingdom 1
United States|Australia|Belgium|Hungary|India|Poland|Singapore|Spain|Taiwan|Turkey 1
United States|Australia|Brazil|Canada 1
United States|Australia|Brazil|Canada|China|Czechia|France|Germany|Greece|Hungary|Italy|Japan|Korea, Republic of|Puerto Rico|Russian Federation|Spain|Taiwan|Turkey|United Kingdom 1
United States|Australia|Brazil|Canada|China|Czechia|France|Germany|Israel|Italy|Japan|Korea, Republic of|Russian Federation|Spain|Switzerland|Taiwan|United Kingdom 1
United States|Australia|Brazil|Canada|Denmark|Finland|France|Germany|Italy|Korea, Republic of|Netherlands|Norway|Russian Federation|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Canada|Denmark|Estonia|Finland|France|Germany|Israel|New Zealand|Sweden|United Kingdom 1
United States|Australia|Canada|France|Germany|Italy|Korea, Republic of|Netherlands|Portugal|Spain|Switzerland|United Kingdom 1
United States|Australia|Canada|France|Germany|Italy|Korea, Republic of|Spain|United Kingdom 1
United States|Australia|Canada|France|Germany|Italy|Spain 1
United States|Australia|Canada|France|Germany|Korea, Republic of|Spain|United Kingdom 1
United States|Australia|Canada|France|Germany|Netherlands|Switzerland|United Kingdom 1
United States|Australia|Canada|France|Germany|Poland|United Kingdom 1
United States|Australia|Canada|France|Italy|Korea, Republic of|United Kingdom 1
United States|Australia|Canada|Germany|Israel|Italy|New Zealand|Poland|Romania|Russian Federation|Spain|Sweden|Ukraine 1
United States|Australia|Canada|Germany|Japan 1
United States|Australia|Canada|Ireland|Italy|Netherlands|Spain 1
United States|Australia|Canada|Israel 1
United States|Australia|Canada|Italy|Puerto Rico|United Kingdom 1
United States|Australia|Canada|New Zealand|Puerto Rico|Switzerland 1
United States|Australia|Canada|New Zealand|Saudi Arabia 1
United States|Australia|Canada|Puerto Rico|Switzerland 1
United States|Australia|Finland|France|Germany|Netherlands|Spain|United Kingdom 1
United States|Australia|Finland|Italy|Singapore|Spain|Switzerland 1
United States|Australia|France 1
United States|Australia|France|Germany 1
United States|Australia|France|Germany|Israel|Korea, Republic of|Spain 1
United States|Australia|France|Germany|Italy|Japan|Korea, Republic of|Netherlands|Singapore|Spain 1
United States|Australia|France|Germany|Italy|Japan|Netherlands 1
United States|Australia|France|Germany|Italy|Japan|Romania|Spain|United Kingdom 1
United States|Australia|France|Greece|Italy|Japan 1
United States|Australia|France|Italy|Spain 1
United States|Australia|France|Spain 1
United States|Australia|Germany 1
United States|Australia|Germany|Italy 1
United States|Australia|Germany|United Kingdom 1
United States|Australia|Ireland 1
United States|Australia|Israel|Poland|Ukraine 1
United States|Australia|Italy|New Zealand|Spain 1
United States|Australia|New Zealand 1
United States|Australia|Singapore 1
United States|Australia|Spain 1
United States|Austria 1
United States|Austria|Belgium|Canada|Denmark|Finland|France|Germany|Greece|Ireland|Israel|Italy|Netherlands|Norway|Portugal|Puerto Rico|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
United States|Austria|Belgium|Canada|France|Germany|Hungary|Italy|Korea, Republic of|Spain|Sweden|Switzerland|Thailand|United Kingdom 1
United States|Austria|Belgium|Canada|France|Germany|Italy|Netherlands|Poland|Portugal|Spain|United Kingdom 1
United States|Austria|Belgium|Czech Republic|France|Germany|Ireland|Italy|Netherlands|Sweden|United Kingdom 1
United States|Austria|Belgium|Czechia|France|Germany|Italy|Netherlands|United Kingdom 1
United States|Austria|Belgium|France|Germany|Hungary|Italy|Poland|Spain|Sweden|Switzerland|United Kingdom 1
United States|Austria|Bulgaria|Canada|Croatia|France|Germany|Greece|Italy|Poland|Portugal|Romania|Russian Federation|Sweden|Ukraine 1
United States|Austria|France|Germany|Italy|Norway|Spain|Sweden 1
United States|Austria|Germany|Italy|Poland|United Kingdom 1
United States|Austria|Germany|Italy|Spain 1
United States|Austria|Germany|Poland|Spain 1
United States|Belgium|Brazil|France|Peru|United Kingdom 1
United States|Belgium|Bulgaria|Canada|Czechia|France|Germany|Ireland|Israel|Italy|Netherlands|Spain 1
United States|Belgium|Canada|Croatia|France|Germany|Israel|Italy|Netherlands|Portugal|Spain|Sweden|United Kingdom 1
United States|Belgium|Canada|Czech Republic|Finland|France|Germany|Greece|Israel|Slovakia|Switzerland|Turkey|United Kingdom 1
United States|Belgium|Canada|Czechia|Denmark|France|Germany|Italy|Japan|Korea, Republic of|Poland|Spain|Sweden|United Kingdom 1
United States|Belgium|Canada|Czechia|France|Germany|Ireland|Israel|Italy|Norway|Poland|Serbia|Spain|United Kingdom 1
United States|Belgium|Canada|Denmark|Finland|France|Germany|Italy|Netherlands|Norway|Spain|United Kingdom 1
United States|Belgium|Canada|Denmark|France|Germany|Hungary|Italy|Japan|Korea, Republic of|Poland|Spain|Sweden|Ukraine|United Kingdom 1
United States|Belgium|Canada|France|Germany|Israel|Italy|Japan|Korea, Republic of|Poland|Spain|Taiwan|Turkey|United Kingdom 1
United States|Belgium|Canada|France|Germany|Israel|Italy|Poland 1
United States|Belgium|Canada|France|Germany|United Kingdom 1
United States|Belgium|Czech Republic|France|Serbia|United Kingdom 1
United States|Belgium|Czech Republic|Greece|Italy|Poland|Russian Federation|Spain 1
United States|Belgium|Czechia|France|Hungary|India|Italy|Korea, Republic of|Romania|Spain|United Kingdom 1
United States|Belgium|Denmark|France|Israel|Italy|Netherlands|Spain|Sweden 1
United States|Belgium|France|Germany 1
United States|Belgium|France|Germany|Greece|Israel|Italy|Lithuania|Portugal|Spain 1
United States|Belgium|France|Germany|Israel|Italy|Netherlands|Spain|Sweden|United Kingdom 1
United States|Belgium|France|Italy|Netherlands 1
United States|Belgium|France|Italy|Netherlands|Spain 1
United States|Brazil|Bulgaria|Canada|Germany|Greece|India|Italy|Mexico|Netherlands|Poland|Romania|Russian Federation|Spain|Taiwan|Thailand|Ukraine|United Kingdom 1
United States|Brazil|Canada|Czechia|Denmark|France|Germany|Greece|Hungary|Israel|Italy|Japan|Korea, Republic of|Poland|Portugal|Romania|Serbia|Spain|Sweden|Taiwan|United Kingdom 1
United States|Brazil|Denmark|France|Germany|Hong Kong|Italy|Korea, Republic of|Puerto Rico|Taiwan|United Kingdom 1
United States|Brazil|France|Israel|Italy|Netherlands|Portugal|Singapore|Spain|United Kingdom 1
United States|Brazil|France|Italy|Korea, Republic of|Netherlands|Russian Federation|United Kingdom 1
United States|Canada|Denmark|France|Germany|Israel|Italy|Netherlands|Poland|Spain|United Kingdom 1
United States|Canada|Finland|France|Germany|Italy|United Kingdom 1
United States|Canada|France|Germany|Italy 1
United States|Canada|France|Germany|Italy|Netherlands|Poland|Spain|United Kingdom 1
United States|Canada|France|Germany|Italy|Spain|Sweden|United Kingdom 1
United States|Canada|France|Germany|Netherlands 1
United States|Canada|France|Italy 1
United States|Canada|France|Italy|Norway|Spain|United Kingdom 1
United States|Canada|France|Italy|United Kingdom 1
United States|Canada|France|Netherlands|Spain|United Kingdom 1
United States|Canada|France|Poland 1
United States|Canada|France|Spain 1
United States|Canada|Georgia|Moldova, Republic of|Poland|Spain|Ukraine 1
United States|Canada|Germany|Israel|United Kingdom 1
United States|Canada|Germany|Italy|Poland|Spain 1
United States|Canada|Germany|Italy|Spain|Sweden|United Kingdom 1
United States|Canada|Germany|Poland|Switzerland 1
United States|Canada|Israel|Puerto Rico 1
United States|Canada|Netherlands 1
United States|Canada|New Zealand 1
United States|Canada|Sweden 1
United States|Denmark 1
United States|Denmark|France|United Kingdom 1
United States|Denmark|Italy 1
United States|Egypt|India 1
United States|Egypt|Singapore 1
United States|France|Australia|Austria|Belgium|Canada|China|Czechia|Germany|Hungary|Israel|Italy|Japan|Korea, Republic of|Mexico|Poland|Romania|Russian Federation|Spain|Sweden|Taiwan|United Kingdom 1
United States|France|Germany|Italy|Japan|Netherlands|United Kingdom 1
United States|France|Germany|Italy|Korea, Republic of 1
United States|France|Germany|Italy|Spain|United Kingdom 1
United States|France|Germany|Italy|Switzerland|United Kingdom 1
United States|France|Germany|Norway 1
United States|France|Germany|Spain 1
United States|France|Hungary|Italy|Japan|Korea, Republic of|Malaysia|Netherlands|Russian Federation|Spain|Thailand|Turkey|United Kingdom 1
United States|France|Italy|Netherlands 1
United States|France|Italy|Spain 1
United States|France|Italy|United Kingdom 1
United States|France|Japan|United Kingdom 1
United States|France|Spain|United Kingdom 1
United States|France|United Kingdom 1
United States|Germany|Israel 1
United States|Germany|United Kingdom 1
United States|Hungary|Israel|Italy|Spain 1
United States|India|Israel 1
United States|Israel|Italy|Poland|Russian Federation|Spain|United Kingdom 1
United States|Israel|Peru 1
United States|Italy|Netherlands|Singapore|Spain 1
United States|Italy|United Kingdom 1
United States|Japan 1
United States|New Zealand 1
United States|Singapore 1
United States|Singapore|Australia|Belgium|Canada|Czechia|Denmark|Finland|France|Germany|Hungary|Israel|Italy|Korea, Republic of|Mexico|Netherlands|Norway|Poland|Slovakia|South Africa|Spain|Sweden|Taiwan|Thailand|Ukraine|United Kingdom 1
United States|Spain|Australia|Belgium|Denmark|France|Germany|Hungary|Israel|Italy|Netherlands|New Zealand|Poland|Turkey|United Kingdom 1
United States|Spain|United Kingdom 1
United States|Sweden 1

Sites per Study

Site_count Study_Count
1 1619
2 219
3 143
4 96
5 93
6 75
7 50
8 54
9 50
10 42
11 42
12 31
13 28
14 19
15 23
16 14
17 21
18 17
19 15
20 18
21 20
22 21
23 17
24 16
25 11
26 8
27 11
28 10
29 5
30 8
31 8
32 8
33 12
34 13
35 7
36 7
37 1
38 9
39 4
40 3
41 3
42 6
43 6
44 4
45 3
46 5
47 2
48 2
49 1
50 11
51 4
52 5
53 6
54 5
55 4
56 3
57 4
58 3
59 2
60 2
61 4
62 4
63 1
64 1
65 4
66 4
67 1
69 3
70 2
71 3
72 2
73 3
75 1
76 4
78 3
79 2
80 2
81 5
82 2
83 1
84 2
85 5
86 2
87 3
88 3
90 1
91 3
92 2
94 1
95 1
96 2
97 3
98 1
99 4
100 1
101 2
102 1
103 1
105 1
106 2
107 2
108 3
109 2
110 1
111 2
112 2
113 2
115 1
117 2
118 2
119 4
120 1
122 2
123 2
124 1
125 1
127 2
128 1
130 2
131 2
132 1
134 1
135 3
137 1
139 2
140 1
143 1
144 1
145 1
148 1
149 1
150 2
151 1
153 2
157 1
160 3
161 1
162 1
163 1
165 1
166 1
169 1
170 1
171 2
172 1
173 2
174 2
176 1
177 1
178 1
179 1
185 2
186 1
187 1
188 1
192 2
196 1
198 2
199 1
201 1
209 1
210 1
212 1
215 1
216 1
218 1
220 2
224 1
225 1
228 1
233 1
234 1
235 2
237 1
239 1
241 1
242 1
244 2
262 3
269 1
279 1
298 1
299 1
326 1
341 2
364 1
447 1
454 1
551 1
739 1
796 1
835 1
955 1

Phase

Phase Study_Count
Phase 2 1198
Phase 1 819
Phase 1/Phase 2 466
Phase 3 338
N/A 193
Phase 4 70
Phase 2/Phase 3 60
Early Phase 1 27

Number of Arms

Number_of_Arms Count_of_Studies
1 1620
2 689
3 161
4 93
5 30
6 31
7 14
8 5
9 7
10 8
11 2
12 3
13 1
16 1
17 1
21 1
NA 504

Number of Updates

Count of Versions Count of Studies
1 104
2 154
3 151
4 170
5 145
6 142
7 137
8 121
9 138
10 126
11 130
12 137
13 121
14 106
15 92
16 69
17 76
18 78
19 55
20 52
21 51
22 44
23 42
24 45
25 40
26 47
27 33
28 36
29 23
30 29
31 22
32 27
33 21
34 14
35 13
36 17
37 13
38 15
39 6
40 17
41 14
42 11
43 5
44 10
45 9
46 8
47 6
48 5
49 5
50 5
51 9
52 6
53 5
54 1
55 5
56 2
57 3
58 2
59 5
60 3
61 3
62 6
63 2
64 2
65 6
66 3
67 7
68 1
69 4
70 3
71 4
72 8
73 2
74 2
75 3
76 1
77 3
78 3
79 3
80 1
81 4
82 2
83 4
84 1
85 4
86 5
88 1
91 3
92 1
93 1
94 3
96 3
97 1
98 2
101 1
103 1
105 1
106 1
107 2
109 2
111 1
112 1
113 1
114 1
115 1
116 1
117 1
118 2
119 1
124 2
125 2
127 3
129 2
130 1
132 1
133 1
134 2
136 1
137 1
139 2
141 1
148 1
149 1
153 1
154 1
156 2
157 2
158 1
162 2
164 1
170 2
174 1
178 1
183 1
185 1
188 1
192 1
204 1
205 1
208 1
213 1
223 1
232 1
237 1
239 1
241 1
243 1
281 1
284 1
292 1
304 2
320 1
326 1
346 1
347 1
349 2
376 1
397 1
418 1
428 1
439 1
444 1
455 1
482 1
510 1
556 1
630 1
870 1
883 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 66970 3067 21.835670
Contacts/Locations 30875 2803 11.014984
Arms 6909 2149 3.214984
Interventions 6909 2149 3.214984
Recruitment Status 5952 2721 2.187431
Eligibility 5887 2152 2.735595
Study Design 5707 2308 2.472704
Study Description 5630 1842 3.056460
Study Identification 5259 2054 2.560370
Outcome Measures 4605 1931 2.384775
Conditions 4092 1462 2.798906
Sponsor/Collaborators 3625 1864 1.944743
None (earliest Version on record) 3171 3171 1.000000
Oversight 2770 1822 1.520307
References 1682 810 2.076543
More Information 1543 413 3.736077
Results 604 604 1.000000
IPDSharing 429 337 1.272997
Baseline Characteristics 262 186 1.408602
Results Submission Events 199 199 1.000000
Reported Adverse Events 167 138 1.210145
Documents 149 146 1.020548
Participant Flow 142 118 1.203390
2020 Outcome Measures 1 1 1.000000
Quality Control Review has not concludedReturned: March 18 1 1 1.000000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 4.00000 2.0000 1.00000 1.0000 1.00000 9.0000 6.0000 10.0000
1st Qu. 12.50000 26.0000 18.00000 30.0000 30.00000 50.0000 174.7500 58.0000
Median 20.00000 53.0000 30.00000 45.0000 50.00000 100.0000 350.0000 101.0000
Mean 35.77778 194.3723 39.69351 68.9191 76.33951 246.1525 572.8712 221.4706
3rd Qu. 33.00000 120.0000 49.00000 76.0000 92.75000 201.0000 576.7500 206.2500
Max. 312.00000 4000.0000 746.00000 2000.0000 862.00000 2000.0000 9349.0000 2600.0000

Trial Group Type

group_type Group_Count
Experimental 3833
NA 504
Active Comparator 463
Other 145
No Intervention 90
Placebo Comparator 62
Sham Comparator 2

Intervention Model

intervention_model Study_Count
Single Group Assignment 1945
Parallel Assignment 790
NA 289
Sequential Assignment 96
Crossover Assignment 33
Factorial Assignment 18

Primary Purpose

primary_purpose Study_Count
Treatment 2904
Supportive Care 123
Prevention 60
NA 23
Other 21
Basic Science 16
Health Services Research 12
Diagnostic 10
Device Feasibility 1
Screening 1

Observational Studies

Studies by Country

Country Study_Count
United States 143
NA 78
France 30
Italy 22
China 13
Israel 10
Korea, Republic of 9
Spain 9
Denmark 7
Russian Federation 7
Canada 6
Egypt 5
United Kingdom 5
Germany 4
Greece 4
Mexico 3
Sweden 3
United States|Australia|Canada 3
United States|Puerto Rico 3
Australia 2
Belgium 2
Brazil 2
Hong Kong 2
India 2
Ireland|United Kingdom 2
Japan 2
Taiwan 2
Turkey 2
United States|Australia|Canada|New Zealand|Puerto Rico|Switzerland 2
United States|Canada 2
Argentina 1
Argentina|Brazil|Chile|Colombia|Guatemala|Mexico|Panama 1
Austria 1
Austria|Croatia 1
Austria|Germany 1
Austria|Germany|Italy 1
Austria|Germany|Switzerland 1
Austria|United States|Brazil|China|Germany|Iraq|Italy|Malaysia|Netherlands 1
Belgium|Croatia|France|Italy|North Macedonia|Slovakia|Slovenia|Turkey 1
Belgium|France|Portugal 1
Canada|Korea, Republic of 1
Czech Republic|France|Germany|Italy|Poland|Russian Federation|Spain|United Kingdom 1
Czechia 1
Denmark|Finland|Germany|Hungary|Israel|Poland|Russian Federation|Saudi Arabia|United Kingdom 1
Denmark|Finland|Iceland|Lithuania|Norway|Sweden 1
Denmark|Finland|Iceland|Norway|Sweden 1
Denmark|France|Germany|Israel|Italy|Netherlands|Poland|Russian Federation|Spain 1
France|Germany|Italy|Spain 1
Guadeloupe|Martinique 1
Guatemala 1
Hungary 1
Indonesia 1
Italy|Switzerland 1
Jordan 1
Serbia 1
Switzerland 1
Ukraine 1
United States|Australia|Canada|Ireland|New Zealand|Puerto Rico|Switzerland 1
United States|Australia|Canada|New Zealand 1
United States|Australia|Canada|Puerto Rico 1
United States|Australia|Canada|Puerto Rico|Switzerland 1
United States|Austria|Belgium|France|Germany|Greece|Iraq|Italy|Netherlands|Taiwan 1
United States|Belgium|Canada|Germany|Netherlands|United Kingdom 1
United States|Canada|Germany 1
United States|Canada|Puerto Rico|Switzerland 1
United States|Czech Republic|France|Germany|Italy|Poland|Spain|United Kingdom 1
United States|France|Germany|Italy|Netherlands|Puerto Rico|Russian Federation|Spain 1
United States|Netherlands 1
United States|Taiwan 1

Sites per Study

Site_count Study_Count
1 285
2 23
3 11
4 4
5 6
6 3
7 4
8 2
9 2
10 3
11 1
12 1
13 2
14 4
15 2
16 1
17 4
18 1
19 4
20 2
21 1
25 2
26 1
28 1
31 3
32 2
33 3
34 1
35 1
37 2
38 2
39 2
40 1
41 2
42 1
43 1
46 2
47 1
49 1
50 1
51 1
52 1
55 1
56 1
59 1
66 2
70 1
71 1
77 1
79 1
84 1
96 1
112 1
135 1
137 1
142 1
144 1
161 1
165 1
183 1
192 1
200 1
214 1
225 1
244 1
280 1
291 1
292 1

Number of Updates

Count of Versions Count of Studies
1 39
2 54
3 46
4 50
5 46
6 24
7 17
8 8
9 21
10 14
11 10
12 2
13 9
14 9
15 6
16 5
17 4
18 1
20 4
21 1
22 1
23 2
24 2
25 2
27 2
28 1
30 1
33 1
34 1
37 1
38 1
41 1
42 1
44 1
45 1
47 1
62 1
63 2
66 1
68 1
71 1
73 1
78 2
81 1
82 1
83 2
88 2
97 1
105 1
112 1
118 1
122 1
124 1
126 1
164 1
165 1
185 1
224 1
239 1
253 1
267 1
285 1
297 1
341 1
364 1
391 1
453 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 7871 386 20.391192
Contacts/Locations 4376 268 16.328358
Study Description 613 148 4.141892
Recruitment Status 556 319 1.742947
Study Design 545 294 1.853741
None (earliest Version on record) 425 425 1.000000
Eligibility 415 224 1.852679
Study Identification 332 210 1.580952
Sponsor/Collaborators 281 218 1.288991
Outcome Measures 272 178 1.528090
Groups 248 120 2.066667
Interventions 248 120 2.066667
Oversight 239 202 1.183168
Conditions 238 105 2.266667
References 98 55 1.781818
IPDSharing 24 22 1.090909
Results 7 7 1.000000
Results Submission Events 7 7 1.000000
Documents 3 3 1.000000
More Information 2 2 1.000000
Baseline Characteristics 1 1 1.000000
Reported Adverse Events 1 1 1.000000

Enrollment Metrics

Measure Observational
Min 1.0000
1st Qu 50.0000
Median 149.0000
Mean 845.7915
3rd Qu 400.0000
Max 99999.0000

Observation Model

observational_model Study_Count
Cohort 213
Case-Only 102
Other 36
NA 27
Case-Control 24
Case Control 15
Family-Based 3
Ecologic or Community 2
Case-Crossover 1
Case Control, Natural History 1
Defined Population, Natural History 1

Time Perspective

time_perspective Study_Count
Prospective 218
Retrospective 147
Cross-Sectional 27
NA 16
Other 15
Cross-Sectional, Retrospective 1
Longitudinal, Prospective 1

Registries

Studies by Country

Country Study_Count
Germany 5
United States 5
France 4
NA 2
Brazil 1
Canada 1
China 1
Czechia 1
Hong Kong 1
Indonesia 1
Italy 1
Sweden 1
Turkey 1
United Kingdom 1

Sites per Study

Site_count Study_Count
1 16
2 3
6 1
7 1
9 1
27 1
34 1
51 1
192 1

Number of Updates

Count of Versions Count of Studies
1 10
2 2
3 2
4 5
5 2
6 2
11 1
13 1
23 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 83 16 5.187500
Contacts/Locations 34 12 2.833333
None (earliest Version on record) 26 26 1.000000
Study Design 16 12 1.333333
Recruitment Status 11 9 1.222222
Outcome Measures 9 5 1.800000
Eligibility 8 5 1.600000
References 7 2 3.500000
Study Identification 6 5 1.200000
Study Description 5 4 1.250000
Sponsor/Collaborators 4 3 1.333333
Groups 3 3 1.000000
Interventions 3 3 1.000000
IPDSharing 3 2 1.500000
Oversight 3 3 1.000000
Conditions 2 1 2.000000

Enrollment Metrics

Measure Registries
Min 24.000
1st Qu 200.000
Median 494.000
Mean 2613.885
3rd Qu 2750.000
Max 27000.000

Registry Model

observational_model Study_Count
Cohort 14
Other 8
Case-Only 3
Case Control 1

Time Perspective

time_perspective Study_Count
Prospective 19
Other 4
Cross-Sectional 3

Follow-up

target_duration Study_Count
10 Years 7
5 Years 6
1 Year 3
2 Years 3
1 Day 1
12 Months 1
15 Years 1
20 Years 1
25 Years 1
3 Years 1
4 Years 1